New results on fractional linear prediction. - Manuel Duarte Ortigueira; Carlos J. C. Matos (ECC, 2001)

Fractional Filters: An Optimization Approach. - Carlos J. C. Matos; Manuel Duarte Ortigueira (DoCEIS, 2010)

A New Approach to Rational Discrete-Time Approximations to Continuous-Time Fractional-Order Systems. - Carlos J. C. Matos; Manuel Duarte Ortigueira (DoCEIS, 2012)